Johnson has played for Atlanta, New York and Denver during a
seven-year NBA career that was interrupted when he broke his neck
in a car accident in 2002. He returned to the NBA a year and a half
later with the Knicks.

The 27-year-old Johnson had his best season in 2001-02, when he
averaged 8.4 points and 3.4 rebounds in 72 games with the Hawks.
His career averages are 6.2 points and 2.3 rebounds. He started
this season with the Spurs' NBA Development League team in Austin,
averaging 15.8 points and 6 rebounds in 10 games.

Williams, the 33rd pick in the draft, appeared in his only game
with the Spurs on Wednesday against Chicago. He averaged 3.3 points
and 2.6 rebounds in seven preseason games.